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Molten salt facilities, lessons learnt at pilot plant scale to guarantee commercial plants; heat losses evaluation and correction

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  • Prieto, Cristina
  • Osuna, Rafael
  • Fernández, A. Inés
  • Cabeza, Luisa F.

Abstract

This paper presents the importance of the thermal losses in the performance evaluation of thermal storage systems. In order to reinforce this statement, an evaluation of a pilot plant whose size is sufficiently representative for the extrapolation of results at larger scales has been carried out. The evaluation of the heat losses of a molten salt pilot plant with 8.1 MWhth built in Spain by Abengoa is presented. While the storage materials development has attracted a lot of attention from the researchers, the performance of a two-tank storage system has not been evaluated in detail. The relevance of the design of conventional systems such as insulation, mechanical assembly or foundation, are found to be the key for the feasibility of a TES system. Different performance scenarios were performed and based on experimental results, decisions for reengineering of the pilot plant could be taken to improve commercial storage plants.

Suggested Citation

  • Prieto, Cristina & Osuna, Rafael & Fernández, A. Inés & Cabeza, Luisa F., 2016. "Molten salt facilities, lessons learnt at pilot plant scale to guarantee commercial plants; heat losses evaluation and correction," Renewable Energy, Elsevier, vol. 94(C), pages 175-185.
    • Handle: RePEc:eee:renene:v:94:y:2016:i:c:p:175-185
    DOI: 10.1016/j.renene.2016.03.039
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    References listed on IDEAS

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    1. Medrano, Marc & Gil, Antoni & Martorell, Ingrid & Potau, Xavi & Cabeza, Luisa F., 2010. "State of the art on high-temperature thermal energy storage for power generation. Part 2--Case studies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(1), pages 56-72, January.
    2. Prieto, Cristina & Osuna, Rafael & Fernández, A. Inés & Cabeza, Luisa F., 2016. "Thermal storage in a MW scale. Molten salt solar thermal pilot facility: Plant description and commissioning experiences," Renewable Energy, Elsevier, vol. 99(C), pages 852-866.
    3. Gil, Antoni & Medrano, Marc & Martorell, Ingrid & Lázaro, Ana & Dolado, Pablo & Zalba, Belén & Cabeza, Luisa F., 2010. "State of the art on high temperature thermal energy storage for power generation. Part 1--Concepts, materials and modellization," Renewable and Sustainable Energy Reviews, Elsevier, vol. 14(1), pages 31-55, January.
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    2. Peiró, Gerard & Gasia, Jaume & Miró, Laia & Prieto, Cristina & Cabeza, Luisa F., 2016. "Experimental analysis of charging and discharging processes, with parallel and counter flow arrangements, in a molten salts high temperature pilot plant scale setup," Applied Energy, Elsevier, vol. 178(C), pages 394-403.
    3. Peiró, Gerard & Prieto, Cristina & Gasia, Jaume & Jové, Aleix & Miró, Laia & Cabeza, Luisa F., 2018. "Two-tank molten salts thermal energy storage system for solar power plants at pilot plant scale: Lessons learnt and recommendations for its design, start-up and operation," Renewable Energy, Elsevier, vol. 121(C), pages 236-248.
    4. Imponenti, Luca & Albrecht, Kevin J. & Kharait, Rounak & Sanders, Michael D. & Jackson, Gregory S., 2018. "Redox cycles with doped calcium manganites for thermochemical energy storage to 1000 °C," Applied Energy, Elsevier, vol. 230(C), pages 1-18.
    5. Tagle-Salazar, Pablo D. & Prieto, Cristina & López-Román, Anton & Cabeza, Luisa F., 2023. "A transient heat losses model for two-tank storage systems with molten salts," Renewable Energy, Elsevier, vol. 219(P1).
    6. Gabriel Zsembinszki & Boniface Dominick Mselle & David Vérez & Emiliano Borri & Andreas Strehlow & Birgo Nitsch & Andrea Frazzica & Valeria Palomba & Luisa F. Cabeza, 2021. "A New Methodological Approach for the Evaluation of Scaling Up a Latent Storage Module for Integration in Heat Pumps," Energies, MDPI, vol. 14(22), pages 1-17, November.
    7. Li, Zhao & Li, Baorang & Du, Xiaoze & Wu, Hongwei, 2020. "Experimental investigation on stability of thermal performances of solar salt based nanocomposite," Renewable Energy, Elsevier, vol. 146(C), pages 816-827.
    8. Prieto, Cristina & Fereres, Sonia & Ruiz-Cabañas, Francisco Javier & Rodriguez-Sanchez, Alfonso & Montero, Cristina, 2020. "Carbonate molten salt solar thermal pilot facility: Plant design, commissioning and operation up to 700 °C," Renewable Energy, Elsevier, vol. 151(C), pages 528-541.
    9. Cristina Prieto & Sonia Fereres & Luisa F. Cabeza, 2020. "The Role of Innovation in Industry Product Deployment: Developing Thermal Energy Storage for Concentrated Solar Power," Energies, MDPI, vol. 13(11), pages 1-19, June.
    10. González-Portillo, Luis F. & Muñoz-Antón, Javier & Martínez-Val, José M., 2017. "An analytical optimization of thermal energy storage for electricity cost reduction in solar thermal electric plants," Applied Energy, Elsevier, vol. 185(P1), pages 531-546.
    11. Peiró, Gerard & Gasia, Jaume & Miró, Laia & Prieto, Cristina & Cabeza, Luisa F., 2017. "Influence of the heat transfer fluid in a CSP plant molten salts charging process," Renewable Energy, Elsevier, vol. 113(C), pages 148-158.

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